Fly chaser



Sept. 17, 1929. TJOSSEM 1,728,842

FLY CHASER Filed April 16, 1928 M J3 Z9 0 Q 7- o o /7 Patented Sept. 17,1-929 UNITED; [STATES PAT. OFFICE i jgmmemssm ord nal-trimmedrowed. I ifL onasiqn. I i i '7 Application filed April 16, 1928. Seria1:No. 270,3Q7

My invention relates "to a device for remova sleeve 21. At" one end, thesleeve 21 suping flies from the edge of a screen door and ports a brushframe 22 andat its other end has for its general object to provide sucha it forms a pinion 28; -The brush frame 22' device attachable to ascreen door so as to is provided. with arms 24, adapted to receive beoperated by swinging movement of the piecesof rag 25, hen the brush israpidly door. rotated, the rags '25 will swing radially by a Moreparticularly, it is my object to procentrifugal force and will acttoremove the vide such a device including a brush and flies from theedgeofth do means for rotating said brush, when the door Coacting withthepinion 231is a longitudi I0 is opened, in such a manner as to sweepflies nally slidable rack bar 26,'which' is held in from the edge of thedoor. engagement withthe pinion by means of a A further objectof myinvention is to profingerQT', formedfon the framebar '15. One videactuating mechanism, designed to mtiltiend of the rack bar projectstoward the hinge ply the relative movement between two points of' thescreen door and. is there pivoted to 1 situated rather closely adjacenteither side some form 'of' mechanism for giving to it of the door hingeaxis. longitudinal'motion when'the door is opened. l/Vith these andother objects in view, my in- The preferred form of. this mechanism isvention consists in the construction, arrangeshowninFigs. 1 and 2 andcomprises generment and combination of the various parts ally a bellcrank lever, having thearms 28 I 0f my device, whereby the objectsconand 29, the former being substantially 7O templatcd are attained, ashereinafter more parallel totheplane of'the cloorwlien closed fully setforth, pointed out in my claims, and and connected to the .frame bar 15by means illustrated in the accompanying drawings, of a, link 30 and"bracket 31 and the latter in which: being substantially perpendiculartothe door 1 is an elevation of a portion of a whenclosed andbeingconnectedto the rackfl screen door and its adjacent casing, with my bar26by means ofa link 33. The bellcrank invention attached thereto. leveris fulcrumed, as at 32,'upon a bracket Fig. 2 is a horizontal, sectionalview 34, which may be formed integrally with the through the casing justabove the door. framemember 17 Instead of using the bell 1 30 Fig. 3 isa. detail, sectional view taken on crank lever and link30, the link 33might the line 33 of Fig. 2. be fastened directly to the bracket 34," as

Fig. 1 is a detail, sectional View taken on shown in Fig. 5.1;, In thelatter case, as the. the line 44l of Fig. 3. door is swung open, asindicated by the Fig. 5 is a View illustrating a somewhat arrow 36, thatpoint of the door opposedbe 35 modified and simplified form oftheactuattweenthe rack bar 26 and the link 33 will ing mechanism. movetoward the bracket 34:, thereby causing I have used the referencecharacter 10 to the rack bar 26 to move relative to' the door. indicategenerally the door casing of a hous- This advancewill cause the pinion23 to be ing. The screen door comprises the upper rotated revolvingthebrush. However, the

' 40 frame member 11 and the side members 12 amount of )niotion thusobtained is hardlyeo and 13, the latter being hinged to the casingsufficient, and furthermore, the motion is'slow 10, as at 14:. withthebeginning of the-swing andfac- My invention comprises a framestructure eelerates asthedoor swings outwardly. It including a long bar15, adapted to be atism ar pse in employingthemechanism "413 tached asat 16 to the vertical frame members shownin Figs'l and2 to obtainamaximum 12 and 13 and a short member 17 hinged to amountofmotion atthebeginningof a swing. the lower member 15, as at 18 and adapted to iThis is due to the factthat'the arm 27 imbe attached, as at 19, to thedoor casing 10., parts. greater longitudinal movementto the Moimted inthe frame bar 15, near one end, rack, swinging faster while swingingsubthereof, is a stud 20, on which is journalled stantiallyperpendicular to the casing 10 than 0 i y j after it has passed thatposition. It may be further noted that as the door opens, it not onlymoves toward the end of the arm 29 but it forces the arm 21 to swing inthe direction indicated by the arrow 37, thus multiplying therelativemovement of the door and the rack bar. i v

Itv will be noted, by inspecting the dotted line position shown, thatwhen the door is fully opened, the end of the arm will have swung from aposition beyond the center of the casing away from the door to aposition where it has passed the hinge of the door and is adjacent thedoor frame.

Some changes may be made in the construction and arrangement of theparts of my invention without departing from the real spirit and purposeof my invention, and it 1s my intentlon to cover by my clalms, anymodilied forms, of structure or use of mechanical equivalents, which maybe reasonably included within their scope.

I claim as my invention:

1. In combinationwith a door and its casing to which it is hinged, abrush mounted on the door for movement to remove flies from the door, amember secured to the casing and projecting therefrom so that movementof the door will bring it nearer to ,said member, means connected to thebrush to impart move ment thereto when moved relative to the door,

a bell crank lever fulcrumed on the projecting member, one arm thereofprojecting toward the casing when the door is closed and i beingconnected to said means and a link concasing and projecting therefrom sothat movement of the door will bring it nearer to said member, a pinionon the brush, a longi- I 1 tudinally slidable rack meshing with saidpinion, a bell CIEHLE lever fulcrumed on the projecting member, one armthereof projecting toward the casing when the door is closed, a linkconnecting said last mentioned arm to the rack and a second linkconnecting the other arm thereof with the door, the parts being soarranged that movement of the door may swing the bell crank lever so asto move the rack relative to the casing toadd to the movement of saidrack relative to the door caused by swinging of the door relative tosaid projecting member.

3. In combination with a door and the casing to which it is hinged, ametal bar secured to the door in a horizontal position, a bracket hingedto one end of said bar and adapted to be secured to the casing, saidbracket having a projecting member, a brush rotatably mounted on themetal bar in a position to remove flies from the door upon rotating apinion on the brush, a longitudinally sliding rack meshing with saidpinion,,a lug formed on the bar and extending over the rack to retain itin engagement with the pinion, said rack being connected to theprojecting member in such a way that swinging movement of the door willcause the rack to move longitudinally of the bar and to transmitrotating movement to the brush.

Signed this 3rd day of April, 1928, in the county of OBrien and State ofIowa.

KINNEY TJOSSEM.

